so is the problem in the code generator or the slowpopcount? On Thu, Sep 5, 2013 at 2:00 PM, Muhaimin Ahsan wrote:

Here's the dumped asm: http://ghc.haskell.org/trac/ghc/attachment/ticket/7684/cgrun071.S

Muhaimin Ahsan

On Sep 5, 2013, at 12:06 PM, "GHC" wrote:

...

#7684: cgrun071 segfaults ----------------------------------+---------------------------------- Reporter: tibbe | Owner: leroux Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: MacOS X | Architecture: x86_64 (amd64) Type of failure: Runtime crash | Difficulty: Unknown Test Case: cgrun071 | Blocked By: Blocking: | Related Tickets: ----------------------------------+----------------------------------

Comment (by tibbe):

I'm confused. The test isn't compiled with -msse42 and thus the popcnt instruction should never be omitted (check the output assembly to make sure) so it seems more likely that the failure has to do with narrowing.

-- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7684#comment:20 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

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